Merge changes I75f8b425,I5a696101,Ib098b15f into main am: 39f7a7d450

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/2770285

Change-Id: Iaa72ee95c713dbfe4d646e0312dc2f25e70a8921
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

src/android_internal/statsd.cc

diff --git a/src/android_internal/statsd.cc b/src/android_internal/statsd.cc
index e69de29..3df3986 100644
--- a/src/android_internal/statsd.cc
+++ b/src/android_internal/statsd.cc
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "statsd.h"
+
+#include <binder/ProcessState.h>
+#include <stats_subscription.h>
+
+namespace perfetto {
+namespace android_internal {
+
+int32_t AddAtomSubscription(const uint8_t* subscription_config,
+                            size_t num_bytes,
+                            const AtomCallback callback,
+                            void* cookie) {
+  // Although the binder messages we use are one-way we pass an interface that
+  // statsd uses to talk back to us. For this to work we need the some binder
+  // threads listening to the for these messages. To handle this we start a
+  // thread pool if it hasn't been started already:
+  android::ProcessState::self()->startThreadPool();
+
+  auto c = reinterpret_cast<AStatsManager_SubscriptionCallback>(callback);
+  return AStatsManager_addSubscription(subscription_config, num_bytes, c,
+                                       cookie);
+}
+
+void RemoveAtomSubscription(int32_t subscription_id) {
+  AStatsManager_removeSubscription(subscription_id);
+}
+
+void FlushAtomSubscription(int32_t subscription_id) {
+  AStatsManager_flushSubscription(subscription_id);
+}
+
+}  // namespace android_internal
+}  // namespace perfetto